Pre-scanning-based hatching egg spectrum acquisition device and method

Abstract

The hatching egg spectrum acquisition device further comprises an optical bread board, a front mechanism is installed on the optical bread board, a light source and a camera obscura supporting column are arranged on the two sides of the front mechanism respectively, a camera obscura is installed at the upper end of the camera obscura supporting column, and a light splitting mechanism is arranged on the inner side of the camera obscura supporting column. A plurality of light through holes are formed in the lower end of the camera obscura, the light through holes are used for containing hatching eggs, a lens a and a photoelectric detector are installed on the inner side wall of the camera obscura, and the lens a is located between the hatching eggs and the photoelectric detector. The front mechanism and the light splitting mechanism are arranged before light irradiates the hatching eggs, light splitting is carried out before the light irradiates the hatching eggs, and light splitting after the hatching eggs are emitted is replaced, so that a spectrum camera is replaced by a low-cost photoelectric detector and an optical filter, and a data acquisition card at an acquisition end can directly acquire light with corresponding wavelength; and a detection array can be enlarged by additionally arranging a lens and a photoelectric detector, so that the detection flux is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural and animal husbandry technology, and in particular to a device and method for acquiring the spectrum of hatching eggs based on pre-scanning. Background Technology

[0002] In the agricultural and livestock industries, the application of early embryo sex determination technology in hatching eggs is extremely crucial. Currently, sex determination in hatching eggs either relies on traditional shell-breaking detection methods or on non-destructive identification of egg sex using spectral technology. However, traditional shell-breaking detection methods not only waste a lot of resources but also increase production costs and environmental burden. Spectroscopic technology involves dispersing light from the hatching egg after it is emitted to obtain signals of different wavelengths, ultimately producing a spectrum. The required spectral camera equipment is expensive, generally costing tens of thousands to hundreds of thousands of yuan, resulting in high detection costs and slow acquisition speed. Therefore, it has not been widely used in large-scale production. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device and method for acquiring the spectrum of hatching eggs based on pre-scanning.

[0004] The objective of this invention is achieved through the following technical solution: a pre-scanning-based spectral acquisition device for hatching eggs, comprising a dark box, a data acquisition card, and a light source, and further comprising an optical breadboard. A pre-scanning mechanism is mounted on the optical breadboard. A light source and a dark box support are respectively arranged on both sides of the pre-scanning mechanism. The dark box is mounted on the upper end of the dark box support, and a beam splitting mechanism is arranged on the inner side of the dark box support. Several light-transmitting holes are opened at the lower end of the dark box for placing hatching eggs. A lens a and a photodetector are mounted on the inner wall of the dark box. The lens a is located between the hatching egg and the photodetector. The photodetector is electrically connected to the data acquisition card. The data acquisition card and the light source are both electrically connected to a computer.

[0005] Preferably, the front-end mechanism includes a lens b and a light-emitting head. Both the lens b and the light-emitting head are mounted on the optical breadboard via a mounting bracket, with the lens b mounted close to the dark box. The light-emitting head and the light source are connected by optical fiber.

[0006] Preferably, there are two light-transmitting holes.

[0007] Preferably, the beam splitting mechanism includes an electric filter wheel, a lens c, a beam splitting plate, and a reflector. The electric filter wheel, lens c, beam splitting plate, and reflector are sequentially mounted on the optical breadboard, with the electric filter wheel positioned close to the lens b, and the beam splitting plate and reflector located below the light-passing aperture.

[0008] Preferably, the center of lens b and the center of the emission end face of the light-emitting head are at the same height.

[0009] Preferably, the centers of lens b, the motorized filter wheel, lens c, the beam splitter, and the reflector are all located at the same height.

[0010] Preferably, the beam splitter and the reflector are both installed at a 45° angle, and the beam splitter and the reflector are both located directly below the corresponding light-transmitting hole. The center of the light-transmitting hole, lens a and the photodetector are located on the same vertical line.

[0011] Preferably, the spectral splitting ratio of the spectrophotometer is 50:50.

[0012] A method for acquiring the spectrum of hatching eggs based on pre-scanning, comprising the aforementioned device for acquiring the spectrum of hatching eggs based on pre-scanning, and further comprising the following steps:

[0013] S1: Obtain several hatching eggs of different sexes and number them;

[0014] S2: Open the dark box and place the two hatching eggs in the light-transmitting hole, then turn on the light source and photodetector;

[0015] S3: The computer controls the electric filter wheel to rotate intermittently, and the data acquisition card collects data during the pauses.

[0016] S4: During the acquisition process, the spectral curve coordinate area in the interface is automatically plotted as the acquired spectrum and transmitted to the computer for storage.

[0017] The present invention has the following advantages: By setting the pre-emitter and the beam-splitting mechanism before the light shines on the hatching egg, the light is split before it enters the hatching egg, replacing the beam splitting after the light exits the hatching egg. This allows the use of a low-cost photodetector and filter to replace the spectral camera, enabling the data acquisition card at the acquisition end to directly acquire light of the corresponding wavelength. Furthermore, the detection array can be expanded by adding lenses and photodetectors, thereby increasing the detection throughput. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a spectral acquisition device for hatching eggs;

[0019] Figure 2 A schematic diagram of the spectral data of hatching eggs;

[0020] In the diagram, 1-computer terminal, 2-optical breadboard, 3-light source, 4-optical fiber, 5-mounting bracket, 6-light output head, 7-lens b, 8-motorized filter wheel, 9-lens c, 10-beam splitter plate, 11-reflector, 12-dark box support, 13-dark box, 14-lens a, 15-photodetector, 16-data acquisition card, 17-hatching egg. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In this embodiment, as Figure 1 and Figure 2As shown, a pre-scanning-based spectral acquisition device for hatching eggs includes a dark box 13, a data acquisition card 16, and a light source 3. It also includes an optical breadboard 2, on which a pre-scanning mechanism is mounted. The light source 3 and a dark box support 12 are respectively positioned on either side of the pre-scanning mechanism. The dark box 13 is mounted on the upper end of the dark box support 12, and a beam-splitting mechanism is located on the inner side of the dark box support 12. Several light-transmitting holes are opened at the lower end of the dark box 13; preferably, there are two light-transmitting holes. These holes are used to hold hatching eggs 17. A lens a14 and a photodetector 15 are mounted on the inner wall of the dark box 13. The lens a14 is located between the hatching egg 17 and the photodetector 15. The photodetector 15 is electrically connected to the data acquisition card 16. Both the data acquisition card 16 and the light source 3 are electrically connected to a computer terminal 1. By placing the pre-emitter and beam-splitting mechanisms before the light shines on the hatching egg 17, the light is split before entering the egg 17, replacing the previous method of splitting the light after it exits the egg 17. This allows the use of a low-cost photodetector 15 and filter instead of a spectral camera, enabling the data acquisition card 16 at the acquisition end to directly acquire light of the corresponding wavelength. Furthermore, the detection array can be expanded by adding corresponding lenses and photodetectors 15, thereby increasing the detection throughput. In this embodiment, both the data acquisition card 16 and the photodetector 15 are existing products and have not been modified, so they will not be described in detail. The brand of the data acquisition card 16 is NI, and the model is USB6001; the brand of the photodetector 15 is Thorlabs, and the model is PDA100A2.

[0028] Furthermore, the pre-mounted mechanism includes a lens b7 and a light-emitting head 6. Both the lens b7 and the light-emitting head 6 are mounted on the optical breadboard 2 via a mounting bracket 5, with the lens b7 mounted close to the dark box 13. The light-emitting head 6 and the light source 3 are connected by an optical fiber 4. Specifically, the light source 3 is a near-infrared halogen light source. The emitted light from the light source 3 is transmitted to the lens b7 via the optical fiber 4, and the light is collimated by the lens b7 before entering the beam splitting mechanism.

[0029] Furthermore, the beam splitting mechanism includes an electric filter wheel 8, a lens c9, a beam splitting plate 10, and a reflector 11. The electric filter wheel 8, lens c9, beam splitting plate 10, and reflector 11 are sequentially mounted on the optical breadboard 2, with the electric filter wheel 8 positioned close to the lens b7, and the beam splitting plate 10 and reflector 11 located below the light-transmitting aperture. Specifically, light is collimated by lens b7 and then enters the motorized filter wheel 8. The light passes through one of the filters in the motorized filter wheel 8, selecting a wavelength band that is then incident on lens c9. The light is then split into two paths by the beam splitter 10. One path is reflected upwards onto the egg 17 to be tested, while the other path continues forward to the reflector 11 and illuminates another egg 17. The eggs 17 are placed on the light-transmitting aperture, and above each egg 17, a lens a14 for focusing the spectral signal and a photodetector 15 for collecting the spectral signal are placed sequentially. The photodetector 15 converts the light signal into an analog electrical signal and transmits it to the data acquisition card 16. The data acquisition card 16 converts the analog electrical signal into a digital signal and transmits it to the computer 1 for storage. In this embodiment, the egg 17 is of the Hy-Line Brown variety.

[0030] In this embodiment, the center of lens b7 and the center of the emission end face of the light-emitting head 6 are at the same height. Furthermore, the centers of lens b7, the motorized filter wheel 8, lens c9, the beam-splitting plate 10, and the reflector 11 are all at the same height. Specifically, lens c9, the beam-splitting plate 10, and the reflector 11 are all mounted on the optical breadboard 2 via a mounting bracket 5. The mounting bracket 5 is an existing product, including a base and a connecting rod. The base is fixed to the optical breadboard 2 with screws, and the connecting rod is screwed onto the base. The ends of the connecting rods are then connected to their respective components. Here, the centers of all components are at the same height, which ensures that the light is correctly guided to the lower side of the hatching egg 17.

[0031] Furthermore, both the beam-splitting plate 10 and the reflector 11 are installed at a 45° angle, and both are located directly below the corresponding light-transmitting aperture. The centers of the light-transmitting aperture, lens a14, and photodetector 15 are on the same vertical line. Specifically, an optical breadboard b is also vertically installed inside the dark box 13, and lens a14 and photodetector 15 are also mounted on the optical breadboard b via mounting bracket 5, which will not be described in detail here. The fact that the centers of the light-transmitting aperture, lens a14, and photodetector 15 are on the same vertical line ensures that the signal emitted by the hatching egg 17 can be received to the maximum extent. In this embodiment, the focal length of lens b7 is 35mm, the focal length of lens c9 is 135mm, and the focal length of lens a14 is 75mm.

[0032] Furthermore, the spectral splitting ratio of the spectrophotometer 10 is 50:50. Specifically, the spectral splitting ratio of the spectrophotometer 10 of 50:50 ensures that the two eggs 17 receive the same light power.

[0033] A method for acquiring the spectrum of hatching eggs based on pre-scanning, comprising the aforementioned device for acquiring the spectrum of hatching eggs based on pre-scanning, and further comprising the following steps:

[0034] S1: Obtain several hatching eggs of different sexes (17), and number the hatching eggs (17);

[0035] S2: Open the dark box 13 and place the two hatching eggs 17 into the light hole, then turn on the light source 3 and the photodetector 15;

[0036] S3: Computer terminal 1 controls the electric filter wheel 8 to rotate intermittently. During the pauses, data acquisition card 16 acquires data.

[0037] S4: During the acquisition process, the spectral curve coordinate area within the interface is automatically plotted as the acquired spectrum and transmitted to computer 1 for storage. Specifically, in step S3, the motorized filter wheel 8 and the data acquisition card 16 are synchronized, meaning the wavelength of light passing through the motorized filter wheel 8 corresponds to the acquisition wavelength of the data acquisition card 16. In this embodiment, the motorized filter wheel 8 is an existing product, and it is equipped with 10 filters. The center wavelengths of the 10 filters are 720 nm, 730 nm, 740 nm, 750 nm, 760 nm, 820 nm, 830 nm, 860 nm, 970 nm, and 1064 nm, respectively. That is, the motorized filter wheel 8 consists of two 6-hole wheels driven by two motors. In addition to the filters of the above 10 wavelength bands, each wheel has one empty space. When one filter is switching, the other filter remains empty.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pre-scanning-based spectral acquisition device for hatching eggs, comprising a dark box (13), a data acquisition card (16), and a light source (3), characterized in that: It also includes an optical breadboard (2), on which a front mechanism is installed. The front mechanism is provided with the light source (3) and the dark box support (12) on both sides respectively. The dark box (13) is installed at the upper end of the dark box support (12), and a beam splitting mechanism is provided on the inner side of the dark box support (12). Several light-transmitting holes are opened at the lower end of the dark box (13). The light-transmitting holes are used to place the hatching eggs (17). A lens a (14) and a photodetector (15) are installed on the inner side wall of the dark box (13). The lens a (14) is located between the hatching eggs (17) and the photodetector (15). The photodetector (15) is electrically connected to the data acquisition card (16). The data acquisition card (16) and the light source (3) are both electrically connected to the computer terminal (1).

2. The egg spectral acquisition device based on pre-scanning according to claim 1, characterized in that: The front-end mechanism includes a lens b (7) and a light output head (6). Both the lens b (7) and the light output head (6) are mounted on the optical breadboard (2) via a mounting bracket (5). The lens b (7) is mounted close to the dark box (13). The light output head (6) and the light source (3) are connected by an optical fiber (4).

3. The egg spectral acquisition device based on pre-scanning according to claim 2, characterized in that: There are two light-transmitting holes.

4. The egg spectral acquisition device based on pre-scanning according to claim 2, characterized in that: The beam splitting mechanism includes an electric filter wheel (8), a lens c (9), a beam splitting plate (10), and a reflector (11). The electric filter wheel (8), the lens c (9), the beam splitting plate (10), and the reflector (11) are sequentially mounted on the optical breadboard (2), with the electric filter wheel (8) positioned close to the lens b (7). The beam splitting plate (10) and the reflector (11) are located below the light-transmitting aperture.

5. The egg spectral acquisition device based on pre-scanning according to claim 4, characterized in that: The center of the lens b (7) and the center of the emission end face of the light-emitting head (6) are at the same height.

6. The egg spectral acquisition device based on pre-scanning according to claim 5, characterized in that: The centers of the lens b (7), the electric filter wheel (8), the lens c (9), the beam splitter (10), and the reflector (11) are all located at the same height.

7. The egg spectral acquisition device based on pre-scanning according to claim 6, characterized in that: The beam splitter (10) and the reflector (11) are both installed at an angle of 45°, and the beam splitter (10) and the reflector (11) are both located directly below the corresponding light-transmitting hole. The centers of the light-transmitting hole, the lens a (14) and the photodetector (15) are located on the same vertical line.

8. The egg spectral acquisition device based on pre-scanning according to claim 7, characterized in that: The spectral splitting plate (10) has a spectral splitting ratio of 50:

50.

9. A method for acquiring the spectrum of hatching eggs based on pre-scanning, comprising the hatching egg spectrum acquisition device based on pre-scanning as described in any one of claims 4 to 8, characterized in that: It also includes the following steps: S1: Obtain several hatching eggs (17) of different sexes and number the hatching eggs (17); S2: Open the dark box (13), place the two hatching eggs (17) in the light hole, and turn on the light source (3) and photodetector (15). S3: The computer (1) controls the electric filter wheel (8) to rotate intermittently, and during the pause time, the data acquisition card (16) collects data. S4: During the acquisition process, the spectral curve coordinate area in the interface is automatically drawn as the acquired spectrum and transmitted to the computer (1) for storage.

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